1 files changed, 8 insertions, 0 deletions
diff --git a/src/lib.rs b/src/lib.rs
index 25f9ab5..885f364 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -170,6 +170,14 @@ impl MultiVec
         if self.capacity != 0 {
             assert_eq!(fields.as_ref().len(), self.field_cnt());
 
+            assert!(fields
+                .as_ref()
+                .iter()
+                .zip(self.get_field_metadata().unwrap())
+                .all(|(item_field, field_metadata)| {
+                    item_field.id() == field_metadata.type_id
+                }));
+
             if self.capacity == self.length {
                 self.grow_amortized(1, &fields);
             }